The Tea Party favorite's endorsement could boost him against Rep. James Lankford (R-Okla.).
The endorsement marks a shift for the Club, which backed Miller in his 2010 race against Murkowski.
Democracy for America, the progressive group launched by former Vermont Gov. Howard Dean, is endorsing two long-shot Democratic candidates in the South Dakota and Maine Senate races.
He's challenging GOP establishment candidate Tillis in the primary.
The automated PPP survey shows Rep. Paul Broun (R-Ga.) with a double-digit primary lead.
Sen. Mitch McConnell (R-Ky.) has a nearly 40-point lead over his primary challenger, Matt Bevin, in a new Republican survey of the Kentucky Senate GOP primary.
The Alaska senator's attacks come in response to a series of Americans for Prosperity ads.
Ex-lieutenant governor stays in the Democratic primary despite Walsh's Senate appointment.
Matt Bevin hopes his opponent has stumbled onto his Dukakis moment of 2014.
Justin Sink 03/09/14 06:00 AM EDT
Obama is trying to light a fire under his base for the midterm elections.